Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics
Scientific paper
2009-08-19
Astronomy and Astrophysics
Astrophysics
Cosmology and Extragalactic Astrophysics
4 pages, 2 figures, to be published in the Proceedings of the `Galaxy Wars: Stellar Populations and Star Formation in Interact
Scientific paper
The integrated spectro-photometric properties of star clusters are subject to large cluster-to-cluster variations. They are distributed in non trivial ways around the average properties predicted by standard population synthesis models. This results from the stochastic mass distribution of the finite (small) number of luminous stars in each cluster, stars which may be either particularly blue or particularly red. The color distributions are broad and usually far from Gaussian, especially for young and intermediate age clusters, as found in interacting galaxies. When photometric measurements of clusters are used to estimate ages and masses in conjunction with standard models, biases are to be expected. We present a Bayesian approach that explicitly accounts for stochasticity when estimating ages and masses of star clusters that cannot be resolved into stars. Based on Monte-Carlo simulations, we are starting to explore the probability distributions of star cluster properties obtained given a set of multi-wavelength photometric data.
Fouesneau Morgan
Lancon Ariane
No associations
LandOfFree
A Bayesian Approach Accounting for Stochastic Fluctuations in Stellar Cluster Properties does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A Bayesian Approach Accounting for Stochastic Fluctuations in Stellar Cluster Properties, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Bayesian Approach Accounting for Stochastic Fluctuations in Stellar Cluster Properties will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-216372